Diagnostic value of conventional endoscopic ultrasound for lymph node metastasis in upper gastrointestinal neoplasia: A meta-analysis.

Background: Upper gastrointestinal neoplasia mainly includes esophageal cancer and gastric cancer, both of which have high morbidity and mortality. Lymph node metastasis (LNM), as the most common metastasis mode of both diseases, is an important factor affecting tumor stage, treatment strategy and clinical prognosis. As a new fusion technology, endoscopic ultrasound (EUS) is becoming increasingly used in the diagnosis and treatment of digestive system diseases, but its use in detecting LNM in clinical practice remains limited.

[Mental health status of primary school students during the coronavirus disease 2019 epidemic and its influencing factors].

Objective: To study the mental health status of primary school students and the factors influencing the mental health status during the coronavirus disease 2019 (COVID-19) epidemic.

Methods: Online questionnaire surveys were conducted among 3 600 primary school students aged 6-12 years in Jilin Province, China in April, 2020 (during the epidemic) and 3 089 primary school students in September, 2020 (during the regular epidemic prevention and control). The general information and the data related to the Mental Health Scale for Child and Adolescent were collected by the questionnaire surveys.